Casing foe roller mills



(No Model.) 7 2 Sheets Sheet l.

J. M. CASE.

GASING FOR ROLLER MILLS. No. 297,755. Patented Apr. 29, 1884.

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CASING FOR ROLLER MILLS.

No. 297,755. Patented Apr. 29, 1884.

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Nrre STATES Parts JOHN M. CASE, OF COLUMBUS, OHIO, ASSIGNOR TO THE CASE MANUFAC- TURING COMPANY, OF SAME PLACE.

CASING FOR ROLLER-MILLS.

SPECIFICATION forming part of Letters Patent No. 297,755, dated April 29, 1884.

Applicationfiled Ma. 31. 1883. (No model.) r

To all whom it may concern:

Be it known that 1, JOHN M. Case, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful.

Improvements in Casings for Roller-Mills, of which the following is a specification.

My invention has for its object improve ments in the construction of casings for rollermills, and relates to details in the construction of the various parts of the frame.

My-improved frame is constructed in parts,

but so arranged that it may be quickly and cheaply bolted together, forming a solid iron r 5 frame. The manner of constructing the solid the bearings for the stationary rolls. I also cast a curved end piece having flanges for the securing-bolts, which end piece can be used on either end of the machine. I also cast an end piece into which the door is hinged, and from these three pieces or castings duplicated I form the lower part of the casing or frame. The frame is put together by passing bolts through holes in the side of the frame, which engage with the flanges on-the circular pieces 3 5 and with the end piece which holds the frame together. The holesfor admitting these bolts are cast in, so that it is a small amount oflabor to set the frame up and boltit together. When bolted together in this manner, it'possesses all 40 the advantages of a frame cast in one piece,

while the cost in construction is less than onehalf. The cap or top of the frameis constructed of two side pieces, which are absolute duplicates of each other, and have cast on their lower edges covers or housings for the journals which rest in the boxes in the lower side pieces. The two sides are secured together by placing wooden connections between them and fastening them by means of ordinary i wood-screws. When this top or cap is screwed together, it is adapted to be dropped down over the frame, forminga neat and perfect covering over-thetop ofthe rolls and journals. Within this cap is suspended the feeding apparatus, which will form the subject of a subsequent application for Letters Patent.

In the accompanying drawings, Figure 1 is a perspective view of one of the duplicate sides of the frame. Fig.- 2 is an elevation of one of the duplicate sides of the cap or cover. Fig. 6 3 is a perspective view of one of the duplicate ends of the frame. Fig. 4. is a perspective View of one of the door-frames which surmount the end plates illustrated in Fig, 3. Fig. 5is a perspective view of one ,of the doors. Fig. 6 6 is a perspective View of the main frame or casing bolted together in readiness for the reception of the roll-bearings and rolls, showing the doors of said casing open. Fig. 7 is a perspective view of the cap or cover in its complete condition, showing one of the doors thereof open.

The side plates of the frame are shown at 1. They are each formed of a casting such as represented in Fig. 1, with a series of bolt-holes, 4, adapting them to be bolted to the flanges 3 of the end'plates, 2,which end plates are castings of the form shown in Fig. 3, adapted for use at either end of the machine. Corresponding bolt-holes are shown ate in the side plates and at 5 in the flanges of the end plates 2, for the reception ofthe bolts 6, Fig. 6, by which these parts are secured together. The upper end pieces or door-frames, 7, of the main frame or casing, the form of which is represented in 8 Fig. 4, are provided with flanges S,pierced with holes 9, which register with corresponding holes, 10, at the upper part of the frame 1, so thatthese parts may be secured together by bolts, as shown at 11 in Fig. 6. The frames 0 and to readily open and shut,to give the miller access to the interior, and thus enable him to inspect the work of the mill.

The cap or cover of the mill is formed of two side castings, 15, Figs. 2 and 7,"whieh are duplicates of each other, and are formed with marginal flanges pierced with bolt-holes 16, Fig. 2, for the reception of bolts or screws 17, Fig. '7, by which they are fastened to the top plate, 18, and duplicate end plates, 19, of the cover. The cover is further provided with doors 20, to enable the inspection of the feed, and with a hopper, 21. The lower edges of the plate 15 are cast with caps or housings to cover the journals of the rolls.

The summit of the casting 1 is formed with a flange, in which the lower sections of the bearings for the two inside or stationary rolls and for the shaft which agitates the feed-b ox are formed, as represented at 23 23 and 22, respectively. The flange extends to each side of the machine, and is provided with openings 38, through which the standards or supports for the adjustable bearings of the outer rolls pass, as shown and described in a contemporaneous application, Serial No. 96,699. Cavities 24 are formed in the upper margin of said side plate, 1, to accommodate the journals of the movable rolls.

37 are lugs cast on the side plates of the machine,for affording a bearing for the means for supporting and leveling the adjustable roll, as fully described in my application just referred to.

journal-boxes were bolted or riveted to the frame, the necessity for boring holes for the purpose being avoided. It is much cheaper than where thejournal-boxes are formed separately and bolted on; and it saves a great amount of labor, it simply being necessary after casting to babbitt thejournal-bearings.

I am aware that it is not new to secure the boxes of the stationary rolls to the summits of integrallycast paired legs, which legs are adapted for use on either side of the machine, and do not claim such as my invention.

Having thus described my invention,the following is what I claim as new therein and desire to secure by Letters Patent:

1. In a roller-mill, the combination, with a frame constructed of duplicated end and side plates, of a cap or cover similarly constructed, the meeting edges of said parts being formed complementary to each other, as set forth.

2. The combination of the end plates, 2 and 7, constructed as herein described and shown, and adapted for use at either end of the machine, with the side plates, 1, as set forth.

3. The cap or cover comprising the duplicated plates 15 and 1.) and top plate, 18, arranged in the manner and for the purpose herein shown and described.

4. The combination of the lower portion, 1 l 2 2, of the frame or casing and the cap or covcr15 18-19. constructed and adapted for use substantially as herein set forth.

The con1bination,with the duplicate side plates, 1, having the journal-boxes forthestationary rolls cast therewith, of the duplicate plates 15, east with housings for said journals,

and adapted for use on either side of the machine, as set forth.

JOHN M. CASE. \Vitnesses:

OOTAVIUS KNIGHT,

HARRY E. KNIGHT. 

